kevin collins is the 10-year- old boy who vanished nearly 30 years. last night, we took pictures of police leaving the concord apartment where kevin collins' mother lives. investigators say they showed pictures to kevin's mother, his sisters and brother of the lead suspect in the case. now, he's dan ther leon who die -- dan therrien who died. they also showed the family what he looked like at the time back in 1984. >> we started to open this case in the cold case unit saturday year' and we thought dash several years and we -- cold case unit several years ago and we thought we would take another look at it. >> two witnesses say they saw kevin talking with a man with a big black dog before he disappeared. an investigator told ktvu that therrien fit that description and had a black dog. he was interviewed by police just five days after kevin disappeared. he also lived a few feet from the bus stop on masonic avenue where kevin was last seen. we expect to get more information at a press conference held later this afternoon. we'll have more tonight at 5:00.